Sigma Force is a series of action-adventure/thriller novels by American novelist James Rollins. The SIGMA Force is a fictional division of the United States DARPA program. Its purpose is to investigate and to secure sensitive information that could be a threat to the country. Painter Crowe is the lead agent of the force, with a keen analytical mind that can see beyond the obvious facts.

The series began in 2004 with Sandstorm and has continued at the rate of one new book per year ever since. Currently, the Sigma Force series consists of seven novels with an eighth on the way. Below is the order in which James Rollins’ Sigma Force books were originally published:

Publication Order of Sigma Force Books


Sandstorm(2004) Best Hardcover PriceBest Paperback PriceBest Kindle Price
Map of Bones(2005) Best Hardcover PriceBest Paperback PriceBest Kindle Price
Black Order(2006) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Judas Strain(2007) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Last Oracle(2008) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Doomsday Key(2009) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Devil Colony(2011) Best Hardcover PriceBest Paperback PriceBest Kindle Price
Tracker(2012) Best Hardcover PriceBest Paperback PriceBest Kindle Price
Bloodline(2012) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Eye of God(2013) Best Hardcover PriceBest Paperback PriceBest Kindle Price
Sixth Extinction(2014) Best Hardcover PriceBest Paperback PriceBest Kindle Price

Publication Order of Tucker Wayne Books


The Kill Switch(2014) Best Hardcover PriceBest Paperback PriceBest Kindle Price

Note: The Tucker Wayne series is co-authored with Grant Blackwood.

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  • Jesse

    “Tracker” is an ebook, not really considered part of the Sigma Series.

  • Janine Louise Murphy

    Hi,
    On James Rollins website these are the books in order. Although Tracker and Skeleton Key are under Sigma Force they are considered part of two short stories that introduce two new characters. Tracker is a short story that introduces Tucker and Wayne for the first time. (See Kill Switch) which is the first book in that series. So enought prattling here are the books in order according to Mr. Rollins himself:

    1. Sandstorm
    2. Map of Bones
    3. Black Order
    4. Judas Strain
    5. Last Oracle
    6. Doomsday Key
    6.5. Skeleton key
    7. Devil Colony
    7.5 Tracker
    8. Bloodline
    9. Eye of God
    10. Sixth Extinction
    I also recommend his other stand alone novels!
    Happy Reading!!